Was that a rehtorical question Mr. Woollard?

--- In spacesettlers@y..., "victoriatangoman"
> --- In spacesettlers@y..., "tomexe" wrote:
> > Ya see it went like this.
> >
> > First someone asked how to build a pressure vessel, he thought it
> > must be difficult. Then I wrote that not only was it not
> difficult,
> > since it only had to hold 1 atmosphere, but that most designs for
> > colonies already had walls and windows FAR in excess of what was
> > needed for pressure control in order to keep out micrometeorites
> and
> > radiation. And that at least one idea had windows 40ft thick.
And
> > things sort of took off from there, some pointing out like you
> that
> > no where near that thickness hull was needed ect.
>
> Just need to correct something you wrote. I was the one who wrote
> the first message in the thread about pressure vessels. I wanted
> peoples thoughts about the actual nitty-gritty techniques they
> thought would be used but the thread spun out of control on the
> issue of 40 foot thick windows,leaving the issue of construction
> techniques unaddressed. I believe you were the only one who
ventured
> an opinion (mooncrete) on the original topic. I'd love to read more
> of how you think it'll be done. Big blocks, cast in place. Will
> water be needed, where will the water come from, etc?

Actually I had forgotten who had written what, apart from what I had
written.

Here is the thing about making water on the Moon.
http://silver.neep.wisc.edu/~neep533/LEC13/lecture13.htmlref>

Quote: "Hydrogen in the lunar soil, in concert with the oxygen in the
various minerals, is roughly equivalent to 0.5 liter of water per
cubic meter or, to a depth of about two meters, about 106 gallons per
square mile. The possibility of water ice at the lunar poles not with
standing, lunar settles can make water anywhere.

About 90% of the solar wind hydrogen, a significant portion of which
combines with oxygen in the silicates and oxides to form water, can
be released from lunar soil by simple heating to about 800o C (Pepin,
et al, 1970)."

Thus there should be enough materials to make water in substantial
quantities on the moon. As to casting it in bricks or hull sections.
That depends on how well you can get materials into lunar orbit. As
far as construction either method works just as well. Cast slag
bricks from ore production are another possiblity if water production
cant keep up. Also sintered regolith.